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UNITED STATES PATENT Orrics.

WILLIAM EYNON AND JOHN T. DAVIS, OF WILMINGTON, DELAWARE, AS- SIGNORS TO THE DIAMOND STATE IRON COMPANY, OF SAME PLACE.

MACHINE FOR FINISHING BENT AND CREASED HORSESHOE-BLANKS.

SPECIFICATION forming part of Letters Patent No. 379,945, dated March 2'7, 1888.

Application filed November 22, 1887. Serial No. 255,850.

To all whom it may concern:

Be it known that we, WILLIAM EYNON and JOHN T. DAVIS, both of Wilmington, in the county of New Castle and State of Delaware, haveinvented certain new and useful Improvements in Machines for Finishing Bent and Greased Horseshoe-Blanks, of which the following is a Specification, reference being had.

to the accompanying drawings.

The object of our invention is to produce a simple, efficient, and reliable machine for, shaping up and finishing machine-made horseshoes afterthe blanks have been creased, punched, and bent by suitable machinery. I

is simplified and rendered efficient in operation, which improvements we will now proceed to describe in detail, and then to sum up succinctly in our appended claims.

In the accompanying drawings, Figure l is a side elevation of our improved horseshoefinishing machine. Fig. 2 is a plan view of the same. Fig. 3 is a section on the line 3 3 of Fig. 2. Fig. 4 is a section on the line 4 4 of Fig. 1, and Fig. 5 is a front end elevation. Fig. 6 is a section of a creased and bent blank before having been pressed and finished'by our finishing-machine; and Fig. 7 is a section of a creased and bent blank after it has been finished by our machine, the object of these figures being merely to illustrate the nature of the work done upon a'creased and bent blank by our finishing-machine.

Referring to the letters upon the drawings,

Aindicates a main supporting-frame. In the front part of this frame are ordinary adj ustable boxes or bearings adjusted by means of screws vertically in a manner usual in various heavy machinery.

F indicates the main driving-shaft resting in the adjustable bearings and carrying the main driving gear-wheel G, which is fixed to it.- Motion is communicated to the main driv- (No model.)

ing-wheel, and thence to its shaft and to the other parts of the machinery, by any ordinary shafting and gearing such, for example, as shown at'H, which indicates a power-driven shaft, and I, which indicates a spur -gear thereon, gearing with the main driving-wheel of the machine.

The details of construction of the mechanism for laterally and vertically adjusting the movable hearings in the main frame are as follows:

K indicates the lower and L the upper parts of the box or movable hearing, which are both adapted to move by sliding up and down between the main parts of the frame in vertical grooves, into which the ends of the boxes fit loosely. (See Figs. 1 and 3 of the drawings.) These upper and lower parts of the box are made adjustable laterally by means of set-screws M, (see Fig. 1,) which pass through the adjacent parts of the main frame .fromthe outside and impinge against the sides of the boxes. There are four of these set-screws (see Fig. 1) on opposite sides of the main frame, all just alike and operating alike upon the upper and lower partsof the boxes on each side of the main frame. The heads of the setscrews are shown as projections from the main frame-work in their proper positions in Figs. 4 and 5.

' N indicates lugs or projections on eitherside of the upright parts of. the main fraine,through which screw-bolts 0, provided with nuts P, pass. These screw-bolts are pivoted at their lower ends to strong supporting cross-pieces Q, which pass'through the main supporting frame, as indicated in Figs. 1 and 3.

Rindicates a screw passing through ordinary bushings, R, in a strong beam, S, which is apart of the main frame, and bears against the upper part of the movable box. When it is desired to adjust the box up or down, the

nuts P and the screw R areturned to the right or left, as required, and thus the entire boxv I pieces, W. Hubs X upon the main drivingshaft F bear against the outer ends of the bear ing-pieces on either side, as clearly shown in Figs. 2, 4, and 5. By means of this mechanism the main driving-shaft can be adjusted laterally in the same manner that its boxes or bearings may be by merely turning the setscrews T to the right or left, as desired, and wear may be compensated for.

Y indicates an irregularlyshaped roller upon or apart of the main driving-shaft,which carries a steel die, Z, as plainly shown in Fig. 3, the roller being dovetailed to receive the die, as illustrated.

a indicates a lower roller, provided with an annular groove, 1), and secured upon or being a part of the axle a, resting in ordinary stationary bearings, (Z. (See Fig. 1.) In order to adjust the lower roller and its axle laterally, or in the direction of the length of the axle, we provide set-screws e at either end of the axle, which screw into the main frame from the outer sides. These set-screws are provided with collarsf, which have annular grooves in' them, into which project the annular ends of bearing-pieces 9, against which bear the collars h. By this arrangement of mechanism it is only necessary to turn the set-screws e to the right or left at will to properly adjust the lower roller and its axle.

i indicates atable fixed to and supported by the main frame. This table is provided with ways is, and it carries a reciprocating die-carriage, Z, upon these ways, operated by means of the rods m and cranksn, connected with the main driving-shaft. The die-carriage is provided upon its lower side with a rib or slide. 0, which fits into the annular groove in the surface of the lower roller, as shown in Fig. 5.

19 indicates a die-bed, which is secured by means of dovetailing or otherwise to the top of the die-carriage. q indicates a die, which is secured by dovetailing or otherwise into the die-bed, and is the bottom die of the machine, which serves to finish the upper or hoof fitting portion of the horseshoe by smoothing it and thinning it at its inner edge and flattening or widening it, and also giving it an inward incline, so that the outer edge of the shoe shall bear the main weight of the animal. The

shoe-blank is inverted when in the machine.

r indicates a set'screw passing through a lug upon the die-bed, and bearing against the rear or heel end of the die to hold it in place.

8 indicates two heel lugs or projections upon either side of the die, each held in place by means of a setscrew, t, taking into the lower die. These heel-lugs are adjustable,by means of longitudinal slots in them, to suit different sizes of shoes or shoeblanks. Whenadjusted in place for a given size,they form stops against which the heel ends of the blank to be finished are placed by an operator, when by the reciprocationof the die-carriage it is at its forward position, as shown in Fig. 3. Then as the die-carriage moves backward to the position shown in Figs. 1 and 2 the upper die is rotated and the lower die is carried backward, and they come together with the blank between them, first at the heel portion of the blank, and pass along with it as itis carried back by the carriage, and do their work of straightening, and finally smoothing, shaping, flattening, and finishing the shoe.

a indicates two cross-pieces secured to the fixed table. These cross-pieces carry in suitable ordinary guideways or bearings a springrod, '0, provided at its forward end with a striker, w, against which the heel ends of the finished shoe strike in its passage to the rear from between the pressure-dies, thrusting the rod back and compressing its spring until the dies have released the shoe. when the rod will spring forward and kick out the finished shoe, and it will fall from the machine.

By means of our improvements we are enabled to adjust the working parts with great nicety to accommodate them to the require ments of finishing various-sized shoe-blanks and those of varying thickness. The lateral adjustment of the lower rollers works the lateral adjustment of the lower die, and we are able to adjust both dies in every respect practically necessary to doing exact work.

, WVhat we claim as new, and desire to secure by Letters Patent of the United States, is"

1. In a horseshoe finishing machine, the combination of a lower reciprocating die adjustable laterally and an upper rotary die adjustable laterally and vertically, substantially as set forth.

2. In a horseshoe-finishing machine, the combination, with the fixed table I, of the reciprocating lower die-carriage provided with the slide 0, and the lower roller adjustable laterally by means of set-screws, and provided with an annular groove in its surface, into which the said slide fits, substantially as set forth.

3. The combination, with the main frame, of the boxes for the main driving-shaft, com posed of the upper and lower laterally-adjustable parts,K and L, of the lugs N, the screwbolts 0, the nuts P, and the cross-pieces Q, to which the screw-bolts O are pivoted, whereby vertical adjustment of the boxes is secured, substantially as set forth.

4. The combination, with the reciprocating die-carriage, of the die-bed, the lower die supported thereby, and the slotted adjustable heel-lugs s,secured by the set-screws t,substan tially as set forth.

In testimony whereof we have hereunto subscribed our names.

WM. EYNON. JOHN T. DAVIS.

Witnesses:

CHAS. G. PHILLIPS,

L. A. BOWER.

IlO 

